From yayu.li at uconn.edu Thu Feb 15 20:48:51 2018
From: yayu.li at uconn.edu (Yayu Li)
Date: Thu, 15 Feb 2018 20:48:51 -0500
Subject: [Clay-talk] Why I cant receive clay-talk emails
Message-ID:
Dear all,
Sorry to bother all.
I tried to subscribe the clay-talk maillist. It was said that ' You are
already subscribed to this mailing list.' But why can't I received the
emails?
Thanks very much.
--
Yayu Li
Graduate student
Department of Plant Science and Landscape Architecture
University of Connecticut
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From yayu.li at uconn.edu Sat Feb 17 14:38:37 2018
From: yayu.li at uconn.edu (Yayu Li)
Date: Sat, 17 Feb 2018 14:38:37 -0500
Subject: [Clay-talk] Montmorillonite XRD questions
Message-ID:
Hi all,
Sorry to bother you.
I used CsCl, KCl or LiCl solutions to treat Na-montmorillonite (SWy-3).
centrifuged the clay suspensions, and then did XRD analysis with the clay
sediments.
There were peaks around 8.8 degree. Does anyone know what these peaks mean?
Thanks very much. Looking forward to your reply.
[image: Inline image 2]
--
Yayu Li
Graduate student
Department of Plant Science and Landscape Architecture
University of Connecticut
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From yayu.li at uconn.edu Sun Feb 18 21:53:43 2018
From: yayu.li at uconn.edu (Yayu Li)
Date: Sun, 18 Feb 2018 21:53:43 -0500
Subject: [Clay-talk] Clay colloid seperation problem
Message-ID:
Hi all,
Sorry to bother you.
I want to know the amount of Cs that montmorillonite can adsorb. The clay
suspension were centrifuged at 38724 g for 30 minutes, and supernatants
were analyzed for cation concentratin using ICP.
However, I found Fe, Al, Mg in the supernatants, which meant that there
were clay colloids in the supernatants. The clay colloids can have large
CEC and high adsorption capacity of Cs. So the results I got from ICP not
only involved aqueous Cs, but also Cs on clay colloids. However, I want to
know the exact Cs aqueous concentration. My question is how to remove the
clay colloids from the supernatant.
The clay colloids can be smaller than 100 nm, so filtration probably would
not totally remove those clay colloids in the supernatants. Are there any
methods to remove the clay colloids from the supernatants?
Thanks very much. Looking forward to your reply.
--
Yayu Li
Graduate student
Department of Plant Science and Landscape Architecture
University of Connecticut
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From yayu.li at uconn.edu Mon Feb 19 08:40:18 2018
From: yayu.li at uconn.edu (Yayu Li)
Date: Mon, 19 Feb 2018 08:40:18 -0500
Subject: [Clay-talk] (no subject)
Message-ID:
Dear all,
I tried to create Na-form of montmorillonite.
I used 30 mL 1 M NaCl solution to mix with 2 g SWy-3 montmorillonite for 6
hours, centrifuged the clay suspension to remove the supernatants. Then
added the same volume of new NaCl to remix with the clay sediments for 6
hours. The whole process repeated for 8 times.
Then DI water was used to repeat 8 times to wash away extra NaCl. However,
after all the processes, I still found Ca, Mg, K in the clay. Are there any
suggestions how to make the clay as mono-ionic as possible?
Thanks very much.
--
Yayu Li
Graduate student
Department of Plant Science and Landscape Architecture
University of Connecticut
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From yjd at tamu.edu Mon Feb 26 09:58:51 2018
From: yjd at tamu.edu (Deng, Youjun)
Date: Mon, 26 Feb 2018 14:58:51 +0000
Subject: [Clay-talk] Clay Minerals Society Awards nomination due in one week
March 5, 2018
Message-ID: <9028630d012944fba5bf532a1b7126d2@exch-2p-mbx-t3.ads.tamu.edu>
Dear Colleagues,
We still have one week, enough time, to respond:). Please nominate your deserving colleagues or collaborators for the following awards:
1. Marilyn and Sturges W. Bailey Award, the highest honor of The Clay Minerals Society: http://www.clays.org/awards_bailey_award.html
2. The G. W. Brindley Clay Science Lecture: recognizes a clay scientist who will infuse the Society with new ideas, someone who is both a dynamic speaker and involved in innovative research. http://www.clays.org/awards_brindley_lecture.html
3. Marion L. and Chrystie M. Jackson Mid-Career Clay Scientist Award: for excellence in the contribution of new knowledge to clay minerals science through original and scholarly research. The Awardee is to be within the ages of 39 and 60:
http://www.clays.org/awards_Jackson_award.html
Guidelines for nominating qualified individuals can be found at the corresponding links shown above. Please submit nomination materials or inquiries to CMS Awards Committee chair Youjun Deng (yjd at tamu.edu). The deadline for nominations is March 5, 2018.
Youjun Deng
Chair, CMS Awards Committee
Youjun Deng, Ph.D.
Associate Professor of Soil Clay Mineralogy
Department of Soil and Crop Sciences
Texas AgriLife
Texas A&M University
College Station, TX 77843-2474
Tel: (979)-862-8476
Fax: (979)-845-0456
e-mail: yjd at tamu.edu
http://soilcrop.tamu.edu/staff/deng-youjun/
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